Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 38, issue 5
Articles | Volume 38, issue 5
https://doi.org/10.5194/angeo-38-1081-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-38-1081-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 38, issue 5
Regular paper
 | 
20 Oct 2020
Regular paper |  | 20 Oct 2020

Helium in the Earth's foreshock: a global Vlasiator survey

Markus Battarbee, Xóchitl Blanco-Cano, Lucile Turc, Primož Kajdič, Andreas Johlander, Vertti Tarvus, Stephen Fuselier, Karlheinz Trattner, Markku Alho, Thiago Brito, Urs Ganse, Yann Pfau-Kempf, Mojtaba Akhavan-Tafti, Tomas Karlsson, Savvas Raptis, Maxime Dubart, Maxime Grandin, Jonas Suni, and Minna Palmroth

Model code and software

fmihpc/vlasiator: Vlasiator 5.0 (Version 5.0) Sebastian von Alfthan, Yann Pfau-Kempf, Arto Sandroos, Urs Ganse, Otto Akseli Hannuksela, Ilja, Markus Battarbee, Tuomas, Dimitry Pokhotelov https://doi.org/10.5281/zenodo.3640593

VLSV: file format and tools A. Sandroos https://github.com/fmihpc/vlsv/

Analysator: python analysis toolkit O. Hannuksela and the Vlasiator team https://github.com/fmihpc/analysator/

Video supplement

Supplementary Video A Markus Battarbee https://doi.org/10.5446/46641

Supplementary Video B Markus Battarbee https://doi.org/10.5446/46638

Supplementary Video C Markus Battarbee https://doi.org/10.5446/46639

Supplementary Video D Markus Battarbee https://doi.org/10.5446/46640

Download
Short summary
We investigate the dynamics of helium in the foreshock, a part of near-Earth space found upstream of the Earth's bow shock. We show how the second most common ion in interplanetary space reacts strongly to plasma waves found in the foreshock. Spacecraft observations and supercomputer simulations both give us a new understanding of the foreshock edge and how to interpret future observations.
Read more